Editors: An image of the burial site can be downloaded from Flickr at:

http://dailynews.mcmaster.ca/images/F96a%20East%20Asian%20burial.jpg

2,000-year-old bones found in Italy
have East Asian ancestry

Hamilton, Ont. February 01, 2010—Researchers excavating an ancient Roman cemetery made a surprising
discovery when they extracted ancient mitochondrial DNA (mtDNA) from one of the skeletons buried at the
site: the 2,000-year-old bones revealed a maternal East Asian ancestry.

The results will be presented at the Roman Archeology Conference at Oxford, England, in March, and
published in the Journal of Roman Archaeology.

According to Tracy Prowse, assistant professor of Anthropology, and the lead author on the study, the
isotopic evidence indicates that about 20% of the sample analyzed to-date was not born in the area around
Vagnari. The mtDNA is another line of evidence that indicates at least one individual was of East Asian
descent.

“These preliminary isotopic and mtDNA data provide tantalizing evidence that some of the people who lived
and died at Vagnari were foreigners, and that they may have come to Vagnari from beyond the borders of the
Roman Empire,” says Prowse. “This research addresses broader issues relating to globalization, human
mobility, identity, and diversity in Roman Italy.”

Based on her work in the region, she thinks the East Asian man, who lived sometime between the first to
second centuries AD—the early Roman Empire—was a slave or worker on the site. His surviving grave
goods consist of a single pot (which archaeologists used to date the burial). What’s more, his burial was
disturbed in antiquity and someone was buried on top of him.

Prowse’s team cannot say how recently he, or his ancestors, left East Asia: he could have made
the journey alone, or his East Asian genes might have come from a distant maternal ancestor.
However, the oxygen isotope evidence indicates that he was definitely not born in Italy and likely
came here from elsewhere in the Roman Empire.

During this era, Vagnari was an Imperial estate owned by the emperor in Rome and controlled by a
local administrator. Workers were employed in industrial activities on the site, including iron
smelting and tile production. These tiles were used for roofing buildings on the site and were also
used as grave covers for the people buried in the cemetery. Fragmentary tiles found in and around
Vagnari are marked “Gratus Caesaris”, which means “slave” of the emperor.

In addition to the mystery the find uncovers, Prowse sees the broader scientific impact for
archaeologists, physical anthropologists, and classicists: The grave goods from this individual’s
burial gave no indication that he was foreign-born or of East Asian descent.

“This multi-faceted research demonstrates that human skeletal remains can provide another layer
of evidence in conjunction with archaeological and historical information,” says Prowse.

For the last seven years, Prowse has been digging the cemetery at the site of Vagnari, just west of
the city of Bari in southern Italy. The cemetery was first discovered in 2002 by her colleague,
Alastair Small (University of Edinburgh), who directs the excavations at Vagnari and continues to
excavate other areas of the site. Prowse’s research focuses on the bioarchaeological analysis of
the people buried in the cemetery, including isotopic, palaeopathological, and aDNA analysis. The
ancient DNA analyses were conducted by her coauthors on the paper, Jodi Barta and Tanya
vonHunnius, at McMaster University.

This research was funded by the Social Sciences and Humanities Research Council of Canada.

McMaster University, one of four Canadian universities listed among the Top 100 universities in the world, is
renowned for its innovation in both learning and discovery. It has a student population of 23,000, and more
than 140,000 alumni in 128 countries.